Question

What is the value of (A vector + B vector )×(A vector-B vector) ? (1) -2(A vector x B) (3) 0 (2) 2(B x A) (4) both 1 and 2 (vectors)​

Answer 1

Answer:

Finally, the cross product of any vector with itself is the zero vector (a×a=0). In particular, the cross product of any standard unit vector with itself is the zero vector.